Home / 1,911,921-2,638,478.14-1,040,782.38

Finding the Fourth Proportional to 1,911,921, 2,638,478.14 and 1,040,782.38

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Solution

The fourth proportional to 1,911,921, 2,638,478.14 and 1,040,782.38 is: 1,436,294.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,921 : 2,638,478.14 = 1,040,782.38 : x
  2. Step 2: Convert to fraction form
    1,911,921/2,638,478.14 = 1,040,782.38/x
  3. Step 3: Cross multiply
    1,911,921x = 2,638,478.14 × 1,040,782.38
  4. Step 4: Simplify right side
    1,911,921x = 2,746,081,558,127.17
  5. Step 5: Solve for x
    x = 2,746,081,558,127.17/1,911,921
  6. Step 6: Final answer
    x = 1,436,294.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.